Abstract
The effect of amino (trimethylene phosphonic acid), (ATMP), molybdate and Zn2+ on the inhibition of corrosion of mild steel in a neutral aqueous environment containing 60 ppm Cl‐ has been evaluated by the weight ‐ loss method. It is found that the formulation consisting of 50 ppm ATMP, 300 ppm MoO42‐ and 50 ppm Zn2+ has 96 per cent inhibition efficiency. The nature of the protective film has been analysed by X‐ray diffraction technique FTIR and luminescence spectra. It seems that the protective film consists of Fe2(MoO4)3, ZnMoO4, Fe2+‐ATMP complex and Zn(OH)2. This film is found to be luminescent.
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